Drier.



C. A. WE-NDELL.

DRIER. APPLICATION FILEP JUNE 12. I915. RENEWED MAYI9.1916- v LWQWH,Patented July 11, 1916.

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DRIER. APPLICATION FILED JUNE 12 I915. RENEWED MAY 19. 1915-PatentedJlily 11, 1916.

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CARL A. WENDELL, 0F JOLIET, ILLINOIS.

' DRIER.

Specification of Letters Patent. I

Application filed June 12, 1915, Serial No. 33,792. Renewed May 19,1916. Serial No. 98,670.

useful Improvement in Driers, of which the following is a specification.

My invention relates to centrifugal drying machines adapted for thepurpose of extracting moisture from materials, and in the particularinstance here illustrated I have shown an apparatus designed for dryingcoal.

It is illustrated in the accompanying drawings wherein Figure l isavertical section; Fig. 2 a plan view with parts broken away; Fig. 3 adetail sectional View on the line 33 of Fig. 2; Fig. 4 a detailsectional view on the line M of'Fig. 1; Fig. 5 is a bottom view of theparts shown in Fig. 3.

Like parts are indicated by the same lot ter in all the gures.

A, A are the supports and braces which together constitute a frame forthe support of the several parts of my machine.

13 is a driving pulley on the upper end of the shaft B to which is keyeda gear wheel 13 which is in mesh with and drives a gear wheel B 011 thevertical shaft 13 suitably supported in the bearings 13", B on theframe. This shaft carries another gear wheel C which meshes with a smallgear C on the hollow shaft C which surrounds the solid shaft 13.

Mounted on the hollow shaft C is the feed cylinder C from which radiatethe feed chutes C 0* and above which and placed so as to discharge intosaid cylinder is the supply chute C Mounted on the frame at the lowerend of the hollow shaft C is an umbrella shaped collar D which supportsthe chute C"= and has an anti-friction bearing D on top of the secondumbrella-shaped collar D This collar is keyed to the shaft B and bothshaft and umbrella-shaped collar D are properly supported in any desiredmanner. The collar D carries a receptacle composed of the walls D bottomD screen sections E, E and top D I) is a fixed casing mounted in anydesired manner, as for example, on the material box D", and itpreferably extends upwardly to near the feed cylinder C to inclose theparts.

The screens E, E are arranged in sections receptacle. Each screen may ormay not, as the case may be or the requirements of partlcular machinesor materials may suggest, he inclosed in a compartment by means of sidewalls. In the particular form of the apparatus shown here I do not showany such pocket.

E is that portion of the fioor or bottom of the receptacle which liesbeneath the screen E and E is an annular portion of the top of thereceptacle which lies above the.

screen E. The bottom E is provided with an aperture E through whichpasses the pin E" with an enlarged head E vInw ardly projecting from thehead E is the arm E which lies in the path of the roller E on thedownwardly and laterally bent arm E which is secured to and travels withthe spout. On the lower end of the pin E and below the bottom E is alaterally projecting arm E whence leads a chain E to an arm E downwardlyprojecting from the lower edge of the screen frame E Outwardlyprojecting from the pin Fi -is another arm E at the outer end of whichis a weight E By this arrangement the parts tend to remain in theposition shown in Fig. 3 because the centrifugal effect on the ball Eovercomes the tendency of the screen to move outwardly to the positionshown in dotted lines responsive to centrifugal force.

F is a lip projecting upwardly and outwardly from the lower end of thescreen E and overlying a downwardly projecting lip F on the annularplate F between which and the outer edge of the plate E is anoutwardly-opening channel F for the escape of the water.

I have not carefully shown the particular details of the construction ofthese several parts because they may, of course, be madev Patented JulyIll, 1916.

I about the peripheryof the rotating material screen and chute aredriven differentially so that the chute gradually advances its positionwith reference to the screens while both I are rotating together in thesame direction.

As any given chute or spout advances its downwardly and laterally, orforwardly in the direction of rotation, bent arlnE approaches the. arm-E and when the roller E on the arm E engages the arm E it rotates thepin E, swinging the weight E on its pivot and releasing the chain E sothat centrifugal force will cause such screen, being the screen inadvance of the spout, to yield to centrifugal force and rise to theposition shown in dotted lines in Fig. 3. Thus a section of the driedmaterial in the ring of material or a pocket full of such dried coal, ifthe ring be divided into pockets, will be discharged by centrifugalforce downwardly and outwardly along the screen E into the coal hopperor receptacle below. This action takes place intermittently, althoughfor practical purposes continuously,

'along the ring in connection with each spout or chute. During theentire operation, except when such screen 1s forced into the positionshown in Fig. 3, the water will be expelled from the coal or othermaterial through the screen by centrifugal force and will pass up overthe lips or deflecting plates F and 1* and across the annular plate Finto the outer receptacle F whence it may be discharged through the pipeF As soonas the differential rotation of the parts has moved the chuteor spout forwardly, the roller IE will release the arm E, whereupon allthe parts will resume the position shown in Fig. 3, andimmediatelythereafter the advancing chute will fill such empty space or pocket withmoist coal or material. The apparatus is so constructed and timed thatthe drying process will have been completed by the time the feed chuteshave made one-half of one revolution as compared with the screens,whereupon the same action as above described will take place and the drymaterial will be discharged and its space immediately thereafteroccupied with wet material. The screen E is suflicient-ly tilted tofurnish a wide outlet and an easy flow for the centrifngally propelledmaterial out of the material or drying receptacle into the material box.

In the preferred form of my device here illustrated the screen E is inthe first in stance set at an angle to the vertical, although, ofcourse, this is not essential. If the screen be in a vertical positionwhen it is tripped, it will move to an inclined position and thuscentrifugal, force will have full opportunity to expel the material frombeneath the inclined screen.

In the preferred form of my device there are two spouts, but of courseany number of spouts could be used and the speed of rotation could bevaried and the particular details of the device here shown for trippingor tilting or permitting the screen to tilt could be greatly variedwithout departing from the spirit of my invention. If the feed spout ismoving slower than the ring of material then the dumping means must beprovided to dump behind it stated in terms of its movement with respectto the ring of material. In either event, however, the dumping takesplace before or in advance of the discharge of material to the dumped orempty portion of the ring, that is to say, the ring is first cleared ofmaterial at a certain point and then subsequently wet material is fed'to that point. In the claims I have described the discharged section asbeing in advance of the fed section, that is to say, the dischargedsection is always dumped before the feeding spout reaches tached to andmovable with the screen.

3. In a centrifugal drier a series of screen sections, a feed chuteadapted to deliver material to one side of each of such sections, meansfor swingingthe sections to permit the material to escape and a waterdeflecting plate attached to and moving with the screen.

4. In a centrifugal drier a series of inclined screen sections, a feedchute adapted to deliver material to one side of each of said sections,means for swinging the screen sections to permit the material to escapeand a water deflecting plate attached to and moving with each screensection.

5. In a centrifugal drier a screen, a feed chute adapted to delivermaterial to one side of the screen, means for swinging the screen topermit the material to escape and a water deflecting plate attached toand n'ioving with the screen, a water box open toward the outer side ofthe screen and a. material box open toward the other side of: the screenwhen the latter is tilting.

6. In a centrifugal drier an inclined screen, a feed chute adapted todeliver material to one side of the screen, means for swinging thescreen to permit the material to escape and a water deflecting plateattached to and movable with the screen, a water box open toward theouter side 01 the screen and av material box open toward the other sideof the screen when the latter is tilting.

7. In a centrifugal drier a series of screen sections, a feed chuteadapted to deliver material to one'side of each of-such sections, meansfor swinging the sections to permit the material to escape and a waterdeflecting plate attached to and moving with the screen, a water boxopen toward the outer side of the screen and a material box open towardthe other side of the screen when the latter is tilting.

8. In a centrifugal drier a series of inclined screen sections, a feedchute adapted to deliver material to one side of each of said sections,means for swinging the screen sections to permit the material to escapeand a water deflecting plate attached to and moving with each screensection, a water box open toward the outer side of the screen and amaterial box open toward the other side of the screen when the latter istilting.

9. A centrifugal drier containing a screen, a feed chute adapted todeliver material to one side of the screen, means for rotating themdifferentially and means for swinging the screen to permit the materialto escape, a water box open toward the outer side of the screen and amaterial boX open toward the material side of the screen when the latteris tilting.

10. A centrifugal drier containing an in cline d feed chute adapted todeliver material to one side of such screen, means for rotating themdifferentially and means for swinging the screen to permit the materialto escape, a water box open toward the outer side of the screen and amaterial box open toward the material side of the screen when the latteris tilting.

11. Acentrifugal drier containing a series of screen sections, a feedchute adapted to deliver material to one side of each of such screensections, means for rotating the.

screens and chute differentially and means for tilting the screensections to permit the material to escape, a water box open toward theouter side of the screen and a material box open toward the materialside of the screen when the latter is tilting.

12. A centrifugal drier containing a series of inclined screen sections,a feed chute adapted to deliver material to one side of each of suchsections, means for rotating the screen sections and chutediiferentially and means for tilting the screen sections to permit thematerial to escape, a water box open toward the outer side of the screenand a material box open toward the material side of the screen when thelatter is tilting.

In testimony whereof, I aflix my signature in the presence of twowitnesses this 24th day ofMay 1915.

CARL A. WENDELL.

Witnesses:

Minnie M. LINDEAU, Bessie S. Bron.

Copies of this natent may be obtained for five cents each, by addressingthe @enlmiasioner of Patents, Washington, D. 6,

